I am wondering that streamsynchronizer is only for 1-video and 1-audio and 1-text

[Sebastian Dröge]

On Mi, 2013-10-09 at 20:32 -0700, HoonHee Lee wrote:
> It works for multiple audio/video/subtitle streams too. The problem for 
> you here is that streamsynchronizer detects that a stream is changing 
> (i.e. the same sinkpad of it gets a new stream). Then it waits for all 
> other streams (the other sinkpads) to finish first. 
> 
> A stream change is detected by streamsynchronizer by looking at the 
> group ids of the stream-start event. (Or if no group id is set, in which 
> case your code should be fixed, it will compare the sequence numbers of 
> the stream-start event). 
> 
> => In my test code with streamiddemux, I checked about group id on
> stream-start event.
> They have group id below this.
> 
> ---------------------------------------------------------------------------------------
> gst_stream_synchronizer_sink_event : GST_EVENT_STREAM_START,
> stream_start_seqnum = 99, group_id = 32685
> gst_stream_synchronizer_sink_event : GST_EVENT_STREAM_START,
> stream_start_seqnum = 98,  group_id = 32685
> ---------------------------------------------------------------------------------------
> 
> Your meant is that if there is no group id, I have to fix some code in
> streamiddemux. right?
> But, they have group id and then do I have to fix streamiddemux or
> test-code?
> 
> please give me some advice or information for this.

Well, check why it believes that the stream has changed. AFIU it
shouldn't in this case because the group-id stays the same.
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